Sunday, 5 March 2017

TARKIK GANIT VERI IMP QUESTION COLLECTION BY EXAM ZONE

Mathematics useslogic, paper, and calculator. These things are used to create generalrules, which are an important part of mathematics. These rules leave outinformationthat is not important so that a single rule can cover many situations. By finding general rules, mathematicssolvesmanyproblemsat the same time as these rules can be used on other problems.

Aproofgives
a reason why a rule in mathematics is correct. This is done by using
certain other rules that everyone agrees are correct, which are calledaxioms. A rule that has a proof is sometimes called atheorem.
Experts in mathematics perform research to create new theorems.
Sometimes experts find an idea that they think is a theorem but can not
find a proof for it. That idea is called aconjectureuntil they find a proof.

Sometimes,
mathematics finds and studies rules or ideas in the real world that we
don't understand yet. Often in mathematics, ideas and rules arechosenbecause
they are considered simple or neat. On the other hand, sometimes these
ideas and rules are found in the real world after they are studied in
mathematics; this has happened many times in the past. In general,
studying the rules and ideas of mathematics can help usunderstandthe world better.

The same syllogism can be written in anotation:

is read like "and", meaning both of the two.is read like "or", meaning at least one of the two.is read like "implies", or "If ... then ...".is read like "not", or "it is not the case that ...". Parentheses(,)are added for clarity and precedence; this means that what is in parenthesis should be looked at before the things outside.

This is the same example using logic symbols:

And this is the same example using general terms:

Finally, those talking aboutlogictalk aboutstatements. A statement is simply something like "Aristole is human" or "all humans are mortal". Statements have atruth value; they are either true or false, but not both. Mistakes in logic are called "fallacies".